To reduce damage to crops, protect animals, reduce related accidents in other environments, prevent damages by birds and beasts in various kinds of power stations and runways, and prevent damages by birds (feces damage prevention) in management of a condominium.SOLUTION: A birds and beasts damage prevention device is configured so that a front plate 2 has a hole 11 smaller than an outer diameter of a speaker (trumpet speaker) a13, and the birds and beasts damage prevention device contacts the speaker a13 provided on a bottom plate 6. Based on a distress sound or a natural enemy sound recorded for every individual, the device outputs an alert sound (natural enemy sound or distress sound) to a wildlife or injurious bird being a target. In the device, before birds and beasts which should be repelled get used to the sound, the memory storing the alert sound (natural enemy sound or distress sound) can be replaced periodically.SELECTED DRAWING: Figure 1【課題】作物の被害の削減・動物の保護・その他の環境における関連事故の削減、各種発電所や滑走路の鳥獣被害の予防、マンション管理での鳥害予防（糞害防止）を図る。【解決手段】鳥獣害防止装置は、前板２はスピーカー（トランペットスピーカー）ａ１３の外径より小さい孔１１が開いており、底板６に設置したスピーカーａ１３と当接している。豪物の種別（個体別）に収録した苦痛音声又は天敵音をもとに装置からターゲットの害獣や害鳥に向け警戒音（天敵音や当該苦痛音等）を発声させる。音声は、撃退しようとする鳥獣が音声に慣れる前に、定期的に警戒音（天敵音・苦痛音等）を記憶するメモリーを交換出来るようにする。【選択図】図１
